Shama-il Tirmidhi Chapter 044, Hadith Number 004 (308).

Ibn 'Abbaas Radiyallahu 'Anhu reports that one of the daughters of Rasulullah Sallallahu 'Alayhi Wasallam was on her death bed. Rasulullah Sallallahu 'Alayhi Wasallam picked her up and put her before him. She passed away in his presence. Ummi Ayman (who was a slave girl of Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam) began wailing aloud. Rasulullah Sallallahu 'Alayhi Wasallam said: "Are you crying before the Messenger of Allah?" (because tears were also flowing from the eyes of Sayyidina Rasulullah Sallallahu'Alayhi Wasallam). She said: 'Do I not see you cry?' Rasulullah Sallallahu 'Alayhi Wasallam replied: "This crying is not prohibited. It is a mercy of Allah". (He softens the hearts of His servants, and creates love and mercy in them). Rasulullah Sallallahu'Alayhi Wasallam then said: "A Muslim is at peace at all times. even when his soul is being taken out, he is busy uttering the hamd (praises) of Allah".

Commentary
The 'Ulama differ in that with which daughter did this incident take place. According to the muhadditheen and historians this did not take place with any of his daughters but with that of a grandson or granddaughter. It is also possible that this took place with one of the sons. Such incidents took place with his male offspring. With whomsoever this incident may have taken place, the object here is to describe the soft-heartedness of Sayyidina Rasulullah Sallallahu 'Alayhi 'Wasallam, and that stone heartedness is contrary to kindness. To have natural love for children is not against the dignity and sanctity of Prophethood. To be soft hearted is praiseworthy.